As I understand it, autosomal is a broad spectrum test that identifies multiple ethnicities in all ancestral lines--an appealing moneymaker for the testing companies, and if I had the money I might be tempted to take it myself, but not what we need to compare descendants with variations of the Teter surname, or extend research back to Europe. I am more interested in GeneTree's new 19 marker Y-DNA extension.
From the Upton surname project at http://www.familytreedna.com/public/upton/default.aspx?section=results: "Although genetic genealogy has three main approaches, namely Y-DNA, mitochondrial DNA, and autosomal DNA analysis, the optimum method for a surname project is Y-DNA analysis. The Y chromosome is passed essentially unaltered from father to son, unlike other chromosomes which comprise a combination of paternal and maternal DNA."
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